[GSOC 2026] Airflow Contribution & Verification Agent Skills

> [!IMPORTANT] > 1. We had already decided to use contributor-docs as source of truth here instead of solely based on Breeze CLI: https://github.com/apache/airflow/issues/62500#issuecomment-4028191936e > 2. Please add the link to your PoC (draft PR, feature-branch link on your fork, etc.) if you have **at the very beginning of your proposal** so that we don’t overlook it. ### Body ### Background Apache Airflow’s **Breeze** environment is the de facto way to reproduce CI, run tests, and verify changes locally. It encapsulates complex tooling (Docker, integrations, static checks, tests, system verification) behind a single, consistent developer interface. However, modern AI coding tools (e.g. Claude Code, Gemini CLI, GitHub Copilot–style agents) currently treat Airflow’s repo like any generic Python project. They **rarely**: - Understand whether they are running inside or outside Breeze. - Choose the correct commands for host vs. container. - Follow the same workflows that Airflow contributors actually use (e.g. `prek`, `breeze shell`, `breeze start-airflow`). We already expose some information through docs (e.g. `AGENTS.md`), but this mostly inflates the context window rather than giving agents a structured, machine-usable interface to Breeze. This project aims to bridge that gap by creating an **“Airflow Breeze Contribution / Contribution Verification” AI skill** (final name TBD) that systematically encodes common contribution workflows and makes them reliably executable and testable by AI agents. ### Goal The overarching goal is to make AI tools: **Breeze-aware**: able to detect whether they are running inside or outside Breeze and act accordingly. In practice, this means that for a typical contributor PR, an AI agent can: - Run the right static checks. - Run the right subset of tests in Breeze. - Spin up Airflow and verify system behavior for a Dag representing the change (nice-to-have). - **Do all of the above while respecting host/container boundaries**. Additio…